An object of mass 10kg is placed on an inclined plane at 30 degree to the horizontal. Calculate the reaction between two surface and what is the coefficient of static friction.

7 answers

normal force = m g cos 30
so
friction force </= mu m g cos 30

can only say less than if object is not moving.

component of weight down slope = m g sin 30

so if no other forces are acting
m g sin 30 </= mu m g cos 30
or
mu >/= tan 30
M*g = 10 * 9.8 = 98 N.

Fp = 98*sin30 = 49 N.

Fn = 98*Cos30 = 84.9 N.

Fp-u*Fn = M*a.
49-84.9u = 10*0 = 0
u = 0.58
please throw more light in this question please.
Reaction btwn surfaces :R=W cos รจ
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An object of mass 10kg is placed on inclined surface 30 degree to horizontal surface .Find Normal force ?

Normal force
N
An object of mass 10kg is placed on inclined surface 30 degree to horizontal surface .Find Normal force ?

Normal force
N